145617652 has 6 divisors (see below), whose sum is σ = 254830898. Its totient is φ = 72808824.

The previous prime is 145617643. The next prime is 145617697. The reversal of 145617652 is 256716541.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82192356 + 63425296 = 9066^2 + 7964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18202203 + ... + 18202210.

Almost surely, 2^145617652 is an apocalyptic number.

It is an amenable number.

145617652 is a deficient number, since it is larger than the sum of its proper divisors (109213246).

145617652 is a wasteful number, since it uses less digits than its factorization.

145617652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36404417 (or 36404415 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 145617652 is about 12067.2139286581. The cubic root of 145617652 is about 526.1036820871.

The spelling of 145617652 in words is "one hundred forty-five million, six hundred seventeen thousand, six hundred fifty-two".